The kernel has progressively enabled the BPF settings, to the point where
having a separate kernel for it makes little sense, so repatriate the few
non-default BPF-related configs to our main kernel.
* gnu/packages/linux.scm (%bpf-extra-linux-options): Delete variable.
(default-extra-linux-options): Enable CONFIG_NET_CLS_BPF and
CONFIG_NET_ACT_BPF. CONFIG_IKHEADERS is dropped as it adds 4 MiB to the
kernel image and appears somewhat redundant with BTF debug info.
(linux-libre-with-bpf): Deprecate to linux-libre.
Change-Id: Id672241916dcbcdca7cbc16d869d00223446cd3d
This brings the on disk size of the kernel from 164 MiB to 144 MiB, or about
12%.
* gnu/packages/linux.scm (default-extra-linux-options)
[version>=5.13]: Enable CONFIG_MODULE_COMPRESS_ZSTD, else
CONFIG_MODULE_COMPRESS_GZIP.
(make-linux-libre*) [phases] {set-environment}: Set ZSTD_CLEVEL environment
variable to 19.
[native-inputs]: Add zstd.
* gnu/build/linux-modules.scm (module-regex): Add .zst to regexp. Update doc.
(modinfo-section-contents): Extend support to Zstd compressed module.
(dot-ko): Register the 'zstd compression type.
(ensure-dot-ko, file-name->module-name, load-linux-module*)
(module-name->file-name/guess, write-module-name-database)
(write-module-alias-database, write-module-device-database): Update doc.
(module-name-lookup): Also consider zstd-compressed modules.
* gnu/installer.scm (installer-program): Add guile-zstd extension to gexp.
* gnu/system/linux-initrd.scm (flat-linux-module-directory): Likewise.
Decompress zstd-compressed modules for use in initrd.
* guix/profiles.scm (linux-module-database): Add guile-zstd extension to gexp.
Change-Id: Ide899dc5c58ea5033583b1a91a92c025fc8d901a
This is needed for software making use of eBPF programs, such as the sysdig
utility, among others. For more information about BPF, see:
<https://brendangregg.com/blog/2020-11-04/bpf-co-re-btf-libbpf.html>.
* gnu/packages/linux.scm (%default-extra-linux-options): Enable
CONFIG_DEBUG_INFO, CONFIG_DEBUG_INFO_BTF,
CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT, CONFIG_BPF_JIT,
CONFIG_BPF_JIT_ALWAYS_ON, CONFIG_BPF_SYSCALL and BPF_UNPRIV_DEFAULT_OFF.
Disable CONFIG_DEBUG_INFO_REDUCED.
(make-linux-libre*) [native-inputs]: Add dwarves, python-wrapper and zlib.
Change-Id: Idfc64f82aa404e86168bffcf721a325f9e807f75
This is to allow version-specific options to the list of defaults.
* gnu/packages/linux.scm (%default-extra-linux-options): Transform to...
(default-extra-linux-options): ... this procedure, which accepts a 'version'
argument.
(make-linux-libre, linux-libre-arm-generic, linux-libre-arm-generic-5.10)
(linux-libre-arm-generic-5.4, linux-libre-arm64-generic)
(linux-libre-arm64-generic-5.10, linux-libre-arm64-generic-5.4)
(linux-libre-riscv64-generic, linux-libre-mips64el-fuloong2e)
(linux-libre-with-bpf): Adjust accordingly.
* doc/guix-cookbook.texi (Customizing the Kernel): Adjust accordingly.
Change-Id: Ifd3be8b7ed8699bada224a938dbc84205366ff3d
This reduces the total build time by about 20%.
* gnu/packages/linux.scm (make-linux-libre*) [phases] {install}: Ensure that
-jN is used for the install targets. Also honor make flags.
Change-Id: Ib3f4fdcbdeab736315a91eafa8d6d1dff5b89884
1.47.0 would, by default, create an ext4 filesystem which was not
readable by our current version of grub. This should also address a
number of the system test failures.
* gnu/packages/linux.scm (e2fsprogs): Downgrade to 1.46.6.
Change-Id: Ifa6841185ab85d24479f981afc1b42a349716d80
Big thanks to Dariqq <dariqq@posteo.net> for debugging and communicating
upstream about a problem with the deblobbing scripts in this kernel
series!
* gnu/packages/linux.scm (linux-libre-6.9-version, linux-libre-6.9-gnu-revision,
deblob-scripts-6.9, linux-libre-6.9-pristine-source, linux-libre-6.9-source,
linux-libre-headers-6.9, linux-libre-6.9): New variables.
* gnu/packages/aux-files/linux-libre/6.9-arm.conf,
gnu/packages/aux-files/linux-libre/6.9-arm64.conf,
gnu/packages/aux-files/linux-libre/6.9-i686.conf,
gnu/packages/aux-files/linux-libre/6.9-x86.conf: New files.
* Makefile.am (AUX_FILES): Add them.
Signed-off-by: Leo Famulari <leo@famulari.name>
Change-Id: I8dc011a603684f0be88766b7881aa6c560b94443
* gnu/packages/patches/ddcci-driver-linux-linux-6.8.patch: New file.
* gnu/local.mk (dist_patch_DATA): Register it.
* gnu/packages/linux.scm (ddcci-driver-linux): Apply it.
Change-Id: Iac63146e67333aed2a95e8064b19f031c97a4134
Cover-letter:
Add BTF support to kernel, sysdig and dependents, zstd-compressed modules
This series adds BTF (Berkeley Type Format) support to our kernel, catching up
with other main distributions in enabling embedded BPF (Berkeley Packet
Filter) programs.
This was motivated by packaging 'sysdig', a system introspection application
that can make use of BTF. Adding BTF does incur some size increase; with
'linux-libre' package going up from 132 MiB to 164 MiB (24%). This is later
somewhat mitigated by using Zstd compressed (at maximum level, 19) kernel
modules, which brings the kernel size back down to 144 MiB, which corresponds
to a more reasonable 9% increase from before this series. The BPF kernel
variant we were carrying is removed as proper BPF support will now exists in
our main kernel.
That's it! I hope you enjoy using 'csysdig' to keep track of the syscalls and
IO usage of your process/threads.
END
Change-Id: Icb5fc659f529a2a840281284bfb0d74a0cc9b9d9
